在Excel中，要使用身份证号自动识别民族，可以按照以下步骤操作：
1. 首先，确保你的身份证号列已经正确输入，身份证号通常为18位。
2. 在身份证号列旁边添加一个新的列，用于显示民族信息。
3. 在新的民族信息列的第一个单元格中输入公式，如下所示：
```excel
=IF(MID(A2,17,2)="01","汉族",IF(MID(A2,17,2)="02","蒙古族",IF(MID(A2,17,2)="03","回族",IF(MID(A2,17,2)="04","藏族",IF(MID(A2,17,2)="05","维吾尔族",IF(MID(A2,17,2)="06","苗族",IF(MID(A2,17,2)="07","彝族",IF(MID(A2,17,2)="08","壮族",IF(MID(A2,17,2)="09","布依族",IF(MID(A2,17,2)="10","朝鲜族",IF(MID(A2,17,2)="11","满族",IF(MID(A2,17,2)="12","侗族",IF(MID(A2,17,2)="13","瑶族",IF(MID(A2,17,2)="14","白族",IF(MID(A2,17,2)="15","土家族",IF(MID(A2,17,2)="16","哈尼族",IF(MID(A2,17,2)="17","哈萨克族",IF(MID(A2,17,2)="18","傣族",IF(MID(A2,17,2)="19","黎族",IF(MID(A2,17,2)="20","僳僳族",IF(MID(A2,17,2)="21","佤族",IF(MID(A2,17,2)="22","畲族",IF(MID(A2,17,2)="23","高山族",IF(MID(A2,17,2)="24","拉祜族",IF(MID(A2,17,2)="25","水族",IF(MID(A2,17,2)="26","东乡族",IF(MID(A2,17,2)="27","纳西族",IF(MID(A2,17,2)="28","景颇族",IF(MID(A2,17,2)="29","柯尔克孜族",IF(MID(A2,17,2)="30","土族",IF(MID(A2,17,2)="31","达斡尔族",IF(MID(A2,17,2)="32","仫佬族",IF(MID(A2,17,2)="33","羌族",IF(MID(A2,17,2)="34","布朗族",IF(MID(A2,17,2)="35","撒拉族",IF(MID(A2,17,2)="36","毛南族",IF(MID(A2,17,2)="37","仡佬族",IF(MID(A2,17,2)="38","锡伯族",IF(MID(A2,17,2)="39","阿昌族",IF(MID(A2,17,2)="40","普米族",IF(MID(A2,17,2)="41","塔吉克族",IF(MID(A2,17,2)="42","怒族",IF(MID(A2,17,2)="43","乌孜别克族",IF(MID(A2,17,2)="44","俄罗斯族",IF(MID(A2,17,2)="45","鄂温克族",IF(MID(A2,17,2)="46","德昂族",IF(MID(A2,17,2)="47","保安族",IF(MID(A2,17,2)="48","裕固族",IF(MID(A2,17,2)="49","京族",IF(MID(A2,17,2)="50","塔塔尔族",IF(MID(A2,17,2)="51","独龙族",IF(MID(A2,17,2)="52","鄂伦春族",IF(MID(A2,17,2)="53","赫哲族",IF(MID(A2,17,2)="54","门巴族",IF(MID(A2,17,2)="55","珞巴族",IF(MID(A2,17,2)="56","基诺族","其他"))))))
```
其中，`A2`是包含身份证号的单元格。
4. 将此公式向下拖动或复制到其他需要识别民族的单元格中。
5. 每当你在身份证号列中输入新的数据时，对应的民族信息也会自动填充到民族信息列中。
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